# ceiling

### PronunciationEdit

## NounEdit

- The top part of a room.
*This room has a very interesting***ceiling**.

- The upper limit of an object or action.
*price ceilings*

- (
*aviation*) The highest altitude that an aircraft may fly. - (
*mathematics*) The smallest integer greater than or equal to a given number.*The ceiling of 4.5 is 5.*